JP2012527553A - Fixing device for geosynthetic layer - Google Patents

Abstract

  A fixing device for attaching a geosynthetic layer to a vertical member in soil, wherein the geosynthetic layer extends outwardly substantially horizontally from the vertical member. The fixation device includes a stack of flexible rings. Each flexible ring has an inner edge defining a central opening that is larger than the horizontal cross section of the vertical member, and an outer edge, and is secured to the inner edge of the flexible ring adjacent to one side about the inner edge; It is fixed to the outer edge of the flexible ring adjacent to the other side around the outer edge. The bottom ring of the stack of flexible rings is adapted to be secured to the geosynthetic layer. The securing ring is secured around the upper ring of the stack of flexible rings and has a central opening adapted to be secured to the vertical member.

Description

  The present invention is directed to a soil structure with a geosynthetic layer, particularly a geomembrane arrangement around a vertical member within the soil structure.

  Geotechnical and geosynthetic materials are commonly used in the current civil engineering industry. One of the most common geosynthetic materials currently available is a waterproof product. Waterproofing products in a broad sense include geomembranes that are placed in various layers of the soil structure. Such a geomembrane is laid, for example, on the top surface of a landfill, and then a selected amount of landfill material covers the geomembrane layer, followed by another geomembrane, then another landfill material, and the like. This geomembrane is used in a wide variety of applications. Typical applications include waterproofing layers in waste storage facilities, gas barrier layers in waste storage facilities, the use of geomembrane coatings for waterproofing in water and sewage storage and treatment facilities, roads, Including the use of geosynthetic drains in railway tracks and transportation applications.

  Needless to say, the waste collection site is one of the well-known soil construction sites and is inevitably required in the current social structure. This waste collection site may require a lot of valuable land in urban areas where land is most needed. Such land can also be used in favorable applications (eg, golf courses are built), but usually the land is no longer used for waste collection, and a large amount of waste is stabilized. It is necessary to wait until. Although the use and stabilization of a waste collection site can take years, there is a desire to achieve use and stabilization as soon as possible. This will not only increase the safety of those who need to be at the waste collection site, but also allow others (eg golfers) to use it for their preferred use and allow the environment of people living in the area It can be improved as soon as possible.

  Further, in many places where geomembranes are used, vertical members extend into the soil for various reasons. For example, piles with pile head closures to support structures in or above the soil, and (eg, to facilitate leachate / liquid flow in a landfill or to release gas from the landfill For example, vertical pipes in landfills are extended. However, since there is a possibility that soil (ground) may move and sink around the vertical members, it is difficult to achieve proper construction around these vertical members. For example, if the geomembrane is fixed to a vertical member, the movement of the soil around the vertical member can cause the geomembrane to be pulled and torn, impeding filtration and barrier capabilities. On the other hand, if the geomembrane is laid so that it can move freely with respect to the vertical member, the geomembrane will not be damaged by the movement of the soil, but will necessarily be around the vertical member. In other words, voids are present, and the ability to filter and / or block the flow of fluid around the member is hindered.

  The present invention is directed to overcoming one or more of the problems as set forth above.

  In one aspect of the invention, a boot is provided for attaching a geosynthetic layer to a vertical member in soil, where the geosynthetic layer extends outwardly from the vertical member substantially horizontally. The fixation device includes a stack of flexible rings. Each ring has an inner edge that defines a central opening that is larger than the horizontal cross section of the vertical member, and an outer edge, and is secured to the inner edge of the ring adjacent to one side about the inner edge and the other around the outer edge Fixed to the outer edge of the ring adjacent to the side. The bottom ring of the ring stack is adapted to be secured to the geosynthetic layer. A securing ring is secured around the upper ring of the ring stack and has a central opening adapted to be secured to the vertical member.

  In another form of the invention, the vertical member is a pile head closure.

  In yet another form of the invention, the fixation ring is attached to the side of the vertical member. In another embodiment, a reinforcing plate for fixing the fixing ring to the side portion of the vertical member is provided.

  In yet another form of the invention, the fixation ring includes an inner portion adapted to be oriented perpendicular to the sides of the vertical member. In another form, the reinforcing plate fixes the inner part of the fixing ring to the side of the vertical member.

  According to another aspect of the invention, the vertical member is a vent tube over a landfill cover.

  According to yet another aspect of the invention, the ring edges secured together are welded together by heat. In other forms, each of the flexible rings is a geomembrane.

  According to yet another form of the invention, the rings of the ring stack are circular and substantially concentric.

  According to yet another aspect of the invention, the rings of the ring stack are generally rectangular.

  In another aspect of the invention, at least one vertical member extending through the soil structure and a flexible ring at a depth substantially within the soil structure and disposed about the at least one vertical member. A soil structure is provided that includes at least one stack of Each ring has an inner edge that defines a central opening that is larger than the horizontal cross section of the at least one vertical member, and an outer edge, and is fixed to the inner edge of the ring adjacent to one side about the inner edge, It is fixed to the outer edge of the ring adjacent to the other side. The geosynthetic layer is buried at substantially the depth of the stack of flexible rings in the soil structure and has at least one opening therein through which at least one vertical member extends and is flexible. Fixed to the bottom ring of at least one stack of sex rings. The securing ring is secured around the upper ring of at least one stack of rings and includes a central opening secured to at least one vertical member.

  In one form of the invention, the at least one vertical member is a plurality of vertical members and the at least one stack of flexible rings is a plurality of stacks of flexible rings. In this case, each stack has a top ring secured to one of the plurality of securing rings and a bottom ring secured to the geosynthetic layer. Each of the plurality of fixing rings has a central opening, and is fixed to the side of one corresponding vertical member.

  In another form of the invention, the vertical member is a pile head closure.

  In still another embodiment of the present invention, a reinforcing plate for fixing the fixing ring to the side portion of the vertical member is provided.

  In yet another form of the invention, the fixation ring includes an inner portion adapted to be oriented perpendicular to the sides of the vertical member. In another form, the reinforcing plate fixes the inner part of the fixing ring to the side of the vertical member.

  According to another aspect of the invention, the soil structure is a landfill and the vertical member is a vent tube over the landfill of the landfill.

  According to yet another aspect of the invention, the ring edges secured together are welded together by heat. In other forms, each of the flexible rings is a geomembrane.

  According to yet another form of the invention, the rings of the ring stack are circular and substantially concentric.

  According to yet another aspect of the invention, the rings of the ring stack are generally rectangular.

1 is a perspective view showing a fixing device according to the present invention fixed to a geomembrane and a vertical member. FIG. FIG. 2 is a perspective view similar to FIG. 1 illustrating the expanded fixation device with the geomembrane moving downward relative to the vertical member. It is a fragmentary sectional view which shows the earth structure in the state in which the geomembrane was attached to the vertical member by the fixing device of FIG. It is side part sectional drawing which shows the attachment mechanism to the vertical member of the fixing device of FIG. It is side part sectional drawing which shows the attachment mechanism of the ring of a fixing device.

  A geosynthetic layer 10 (such as a geomembrane) with a fixation device 12 according to the invention for attachment to a vertical member 14 in soil 18 is shown in several figures.

  In particular, the fixation device 12 according to the present invention can advantageously be used with virtually any geomembrane 10. At that time, the geomembrane is selected for a specific soil structure according to the structure design of the soil structure.

  When the geomembrane 10 is installed, it is generally laid so as to extend almost horizontally on the top of the soil layer, and then covered with another soil layer. At this time, the geomembrane 10 is continuously arranged between the layers. The However, it should be understood that the present invention can be advantageously used in any application where subsidence or migration is expected at any point after the geosynthetic layer is installed.

  If the soil structure includes a vertical member 14 such as a pile head occlusion material or a ventilation pipe (eg, to smooth the flow of leachate or liquid in the landfill or to release gas from the landfill), The membrane 10 includes a fixing device 12. This fixing device 12 advantageously seals undesired leakage gaps in the region of the vertical member according to the present invention and, over the long term, despite the movement of soil in the soil structure relative to the vertical member 14. It is fixed to the vertical member 14 in such a way as to keep sealing. However, it should be understood that the present invention may also be advantageously used with essentially any vertical member such as manholes, leachate piping, supply piping and waterways, lighting pole pedestals or foundations.

  In accordance with the present invention, the fixation device 12 includes a stack of flexible rings 20. In the illustrated embodiment, there are four flexible rings 20, but it should be understood that as few as two flexible rings 20 may provide at least some of the advantages of the present invention. The flexible ring 20 may advantageously be of geomembrane material.

  Each flexible ring 20 has an outer edge portion 24 and an inner edge portion 28, where the inner edge portion 28 defines a central opening that is larger than the horizontal cross section of the vertical member 14. The inner edge portion 28 of each flexible ring 20 is suitably secured to the inner edge 28 of the flexible ring 20 adjacent to one side (top or bottom), and around the outer edge portion 24 on the other side ( Appropriately secured to the outer edge 24 of the flexible ring 20 adjacent to the bottom or top. Such a connection may be by suitable thermal welding 29 (eg, extrusion, fusion, impulse RF, ultrasound, etc.) as shown in FIG. Alternatively, it may be by other suitable connections (eg, adhesives, chemical agents, etc.) or by suitable shapes (eg, seamlessly formed portions and / or folded layers).

  In the advantageous orientation shown in the figure, the bottom ring 20b of the stack of flexible rings 20 is adapted to be fixed to the geomembrane 10, and the fixing ring 30 is attached to the top ring 20 of this stack of flexible rings 20. Fixed around. The fixing ring 30 has a central opening 34 that is appropriately sized and shaped at the side of the vertical member 14 so that it can be fixed by, for example, a reinforcing plate (opening plate) 40. The fixation ring 30 includes an inner portion 44 adapted to be oriented perpendicular to the sides of the vertical member so that the stiffener plate 40 is relative to the vertical member between the inside of the fixation ring. The portion 44 can be properly secured (eg, by screws 46) in the captured state. However, it should be understood that the broad scope of the present invention may be secured by any suitable structure, including polylock embedded strips, direct welds to tubes, adhesive bonds, chemical bonds, and the like. Furthermore, it should be understood that the retaining ring 30 may be secured to a horizontal surface (eg, a shelf or upper surface provided at a particular position in the height direction) around the vertical member.

  As shown, the flexible ring 20 can advantageously be circular and substantially concentric. The retaining ring 30 may also have a central opening 34 that is suitable or adaptable to the shape of the vertical member 14. However, it should be understood that the ring can also have a variety of shapes suitable to enclose the vertical member 14, including, for example, a square.

  As shown in FIG. 3, the anchoring device 12 according to the invention can advantageously be used in a soil structure 50 having at least one vertical member 14 (eg an exhaust pipe). Here, the geomembrane 10 is on top of one layer of soil or other material 18a, with an additional material 18b on top of the geomembrane 10 so that the geomembrane 10 is within the soil structure 50. Buried at a certain depth. Therefore, when the material 18 and the vertical member 14 of the earth structure 50 move relative to each other with time, the fixing device 12 is not peeled off from the fixing / leakage-preventing mounting mechanism, leaving the mounting mechanism. Still, it should be understood that the fixation device 12 can be expanded vertically as shown in FIG. 2 to accept such movement.

  Reference to the top and bottom is made herein for convenience, and the anchoring device 12 can be used, for example, depending on the expected direction of relative movement, or for manufacturing or mounting convenience (eg, the vertical member 14 is geo (E.g., the reverse orientation with the retaining ring at the bottom can be used advantageously if it is expected to be most likely to be lowered with respect to the membrane 10), e.g., expandable downwardly below the geomembrane 10. It should be understood that it may be oriented in the opposite direction. Accordingly, references herein to vertical and orientation (such as top and bottom) herein and in the appended claims encompass both the meanings conventionally understood and vice versa. Recognize that is intended.

  In addition, it should be understood that two anchoring devices 12, one extending above the geomembrane 10 and the other extending below the geomembrane 10, can be used to most advantageously accommodate relative movement in both directions.

  Still other aspects, objects, and advantages of the invention can be obtained from a study of the specification, figures, and appended claims. However, it should be understood that the present invention may be used in alternative forms. In alternative forms, the objects and advantages of the invention and the preferred embodiments described above may be obtained if not all.

Claims (22)

A fixing device for attaching to the vertical member a geosynthetic layer extending outwardly from the vertical member substantially horizontally,
The fixing device comprises a stack of flexible rings and a fixing ring fixed around an upper ring of the stack of flexible rings;
Each flexible ring has an inner edge that defines a central opening that is larger than the horizontal cross section of the vertical member, and an outer edge, and is adjacent to one side about the inner edge of the flexible ring. Fixed to the inner edge of the flexible ring, fixed to the outer edge of the flexible ring adjacent to the other side around the outer edge of the flexible ring;
The bottom ring of the stack of flexible rings is adapted to be secured to the geosynthetic layer;
A fixation device, wherein the fixation ring has a central opening adapted to be fixed to the vertical member.   The fixing device according to claim 1, wherein the vertical member is a pile head closing material.   The fixing device according to claim 1, wherein the fixing ring is fixed to a side portion of the vertical member.   The fixing device according to claim 3, further comprising a reinforcing plate for fixing the fixing ring to a side portion of the vertical member.   The fixation device of claim 1, wherein the fixation ring includes an inner portion adapted to be oriented perpendicular to a side of the vertical member.   The fixing device according to claim 5, further comprising a reinforcing plate for fixing the inner portion of the fixing ring to a side portion of the vertical member.   The fixation device according to claim 1, wherein the vertical member is a vent pipe on a landfill covering soil.   The fixing device according to claim 1, wherein the edges of the flexible rings fixed to each other are welded together by heat.   The fixation device of claim 8, wherein each of the flexible rings is a geomembrane.   The fixation device of claim 1, wherein the flexible rings of the stack of flexible rings are circular and substantially concentric.   The fixation device of claim 1, wherein the flexible rings of the stack of flexible rings are substantially rectangular. A soil structure,
Comprising at least one vertical member, at least one stack of flexible rings, a geosynthetic layer, and a fixation ring;
At least one of the vertical members extends through the earth structure;
At least one stack of the flexible rings is at a depth substantially within the soil structure and disposed about the at least one vertical member;
Each flexible ring has an inner edge that defines a central opening that is larger than the horizontal cross section of the at least one vertical member, and an outer edge, and is adjacent to one side about the inner edge of the flexible ring. Fixed to the inner edge of the flexible ring, fixed to the outer edge of the flexible ring adjacent to the other side around the outer edge of the flexible ring;
The geosynthetic layer is buried substantially at the depth in the soil structure and has at least one opening through which at least one of the vertical members extends, and at least one of the flexible rings. Fixed to the bottom ring of the stack,
The earthing structure, wherein the anchoring ring is secured around an upper ring of at least one stack of the flexible rings and includes a central opening secured to at least one of the vertical members. At least one of the vertical members is a plurality of vertical members;
At least one stack of said flexible rings is a plurality of stacks of flexible rings, each stack having a top ring and a bottom ring;
The upper ring is fixed to one of the plurality of fixing rings in a state where each of the fixing rings having a central opening is fixed to a side portion of one corresponding vertical member,
The soil structure of claim 12, wherein the bottom ring is secured to the geosynthetic layer.   The soil structure according to claim 12, wherein the vertical member is a pile head closing material.   The earth structure according to claim 12, further comprising a reinforcing plate for fixing the fixing ring to a side portion of the vertical member.   The soil structure of claim 12, wherein the retaining ring includes an inner portion adapted to be oriented perpendicular to a side of the vertical member.   The earth structure according to claim 16, further comprising a reinforcing plate for fixing the inner portion of the fixing ring to a side portion of the vertical member.   The soil structure according to claim 12, wherein the soil structure is a landfill, and the vertical member is a vent pipe on the landfill of the landfill.   The soil structure of claim 12, wherein the edges of the flexible rings secured together are welded together by heat.   The soil structure of claim 19, wherein each of the flexible rings is a geomembrane.   The soil structure of claim 12, wherein the flexible rings of the stack of flexible rings are circular and substantially concentric.   The soil structure of claim 12, wherein the flexible rings of the stack of flexible rings are substantially rectangular.

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